Generated by Cython 3.0.0
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Click on a line that starts with a "+" to see the C code that Cython generated for it.
Raw output: clm.c
+0001: # cython: c_string_type=unicode
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0002: # cython: c_string_encoding=utf8
0003:
+0004: import ctypes
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+0005: from functools import singledispatch, partial
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+0006: import math
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+0007: import random
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+0008: import subprocess
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+0009: import tempfile
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+0010: import time
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+0011: import types
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0012: import cython
0013: from cython.cimports.cpython.mem import PyMem_Malloc, PyMem_Realloc, PyMem_Free
0014: from cython cimport view
+0015: import numpy as np
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0016: cimport numpy as np
+0017: import numpy.typing as npt
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0018: cimport pysndlib.cclm as cclm
0019: cimport pysndlib.csndlib as csndlib
+0020: from pysndlib.sndlib import Sample, Header
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+0021: import sys
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0022:
0023:
0024:
0025:
0026:
+0027: np.import_array()
__pyx_t_44 = __pyx_f_5numpy_import_array(); if (unlikely(__pyx_t_44 == ((int)-1))) __PYX_ERR(0, 27, __pyx_L1_error)
0028:
0029:
0030:
0031: # --------------- clm enums ---------------- #
+0032: cpdef enum Interp:
enum __pyx_t_8pysndlib_3clm_Interp {
__pyx_e_8pysndlib_3clm_NONE,
__pyx_e_8pysndlib_3clm_LINEAR,
__pyx_e_8pysndlib_3clm_SINUSOIDAL,
__pyx_e_8pysndlib_3clm_ALL_PASS,
__pyx_e_8pysndlib_3clm_LAGRANGE,
__pyx_e_8pysndlib_3clm_BEZIER,
__pyx_e_8pysndlib_3clm_HERMITE
};
0033: """
0034: various interpolation types
0035: """
0036: NONE, LINEAR,SINUSOIDAL, ALL_PASS, LAGRANGE, BEZIER, HERMITE
0037:
+0038: cpdef enum Window:
enum __pyx_t_8pysndlib_3clm_Window {
__pyx_e_8pysndlib_3clm_RECTANGULAR,
__pyx_e_8pysndlib_3clm_HANN,
__pyx_e_8pysndlib_3clm_WELCH,
__pyx_e_8pysndlib_3clm_PARZEN,
__pyx_e_8pysndlib_3clm_BARTLETT,
__pyx_e_8pysndlib_3clm_HAMMING,
__pyx_e_8pysndlib_3clm_BLACKMAN2,
__pyx_e_8pysndlib_3clm_BLACKMAN3,
__pyx_e_8pysndlib_3clm_BLACKMAN4,
__pyx_e_8pysndlib_3clm_EXPONENTIAL,
__pyx_e_8pysndlib_3clm_RIEMANN,
__pyx_e_8pysndlib_3clm_KAISER,
__pyx_e_8pysndlib_3clm_CAUCHY,
__pyx_e_8pysndlib_3clm_POISSON,
__pyx_e_8pysndlib_3clm_GAUSSIAN,
__pyx_e_8pysndlib_3clm_TUKEY,
__pyx_e_8pysndlib_3clm_DOLPH_CHEBYSHEV,
__pyx_e_8pysndlib_3clm_HANN_POISSON,
__pyx_e_8pysndlib_3clm_CONNES,
__pyx_e_8pysndlib_3clm_SAMARAKI,
__pyx_e_8pysndlib_3clm_ULTRASPHERICAL,
__pyx_e_8pysndlib_3clm_BARTLETT_HANN,
__pyx_e_8pysndlib_3clm_BOHMAN,
__pyx_e_8pysndlib_3clm_FLAT_TOP,
__pyx_e_8pysndlib_3clm_BLACKMAN5,
__pyx_e_8pysndlib_3clm_BLACKMAN6,
__pyx_e_8pysndlib_3clm_BLACKMAN7,
__pyx_e_8pysndlib_3clm_BLACKMAN8,
__pyx_e_8pysndlib_3clm_BLACKMAN9,
__pyx_e_8pysndlib_3clm_BLACKMAN10,
__pyx_e_8pysndlib_3clm_RV2,
__pyx_e_8pysndlib_3clm_RV3,
__pyx_e_8pysndlib_3clm_RV4,
__pyx_e_8pysndlib_3clm_MLT_SINE,
__pyx_e_8pysndlib_3clm_PAPOULIS,
__pyx_e_8pysndlib_3clm_DPSS,
__pyx_e_8pysndlib_3clm_SINC
};
0039: """
0040: many useful windows
0041: """
0042: RECTANGULAR, HANN, WELCH, PARZEN, BARTLETT, HAMMING, BLACKMAN2, BLACKMAN3, BLACKMAN4, EXPONENTIAL, RIEMANN, KAISER, CAUCHY, POISSON, GAUSSIAN, TUKEY, DOLPH_CHEBYSHEV, HANN_POISSON, CONNES, SAMARAKI, ULTRASPHERICAL, BARTLETT_HANN, BOHMAN, FLAT_TOP, BLACKMAN5, BLACKMAN6, BLACKMAN7, BLACKMAN8, BLACKMAN9, BLACKMAN10, RV2, RV3, RV4, MLT_SINE, PAPOULIS, DPSS, SINC,
0043:
+0044: cpdef enum Spectrum:
enum __pyx_t_8pysndlib_3clm_Spectrum {
__pyx_e_8pysndlib_3clm_IN_DB,
__pyx_e_8pysndlib_3clm_NORMALIZED,
__pyx_e_8pysndlib_3clm_RAW
};
0045: """
0046: types of normalizations when using the spectrum function. The results are in dB if IN_DB, or linear and normalized to 1.0 NORMALIZED, or linear unnormalized RAW
0047: """
0048: IN_DB, NORMALIZED, RAW
0049:
+0050: cpdef enum Polynomial:
enum __pyx_t_8pysndlib_3clm_Polynomial {
__pyx_e_8pysndlib_3clm_EITHER_KIND,
__pyx_e_8pysndlib_3clm_FIRST_KIND,
__pyx_e_8pysndlib_3clm_SECOND_KIND,
__pyx_e_8pysndlib_3clm_BOTH_KINDS
};
0051: """
0052: used for polynomial based gens
0053: """
0054: EITHER_KIND, FIRST_KIND, SECOND_KIND, BOTH_KINDS
0055:
0056:
0057:
0058: # --------------- function types for ctypes ---------------- #
+0059: INPUTCALLBACK = ctypes.CFUNCTYPE(ctypes.c_double, ctypes.c_void_p, ctypes.c_int)
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+0060: EDITCALLBACK = ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_void_p)
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(void)(mus_error_set_handler(((mus_error_handler_t *)__pyx_f_8pysndlib_3clm_clm_error_handler)));
0153:
0154:
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0157:
0158:
0159:
0160: # todo add mus_set_xcoeff and mus_set_ycoeff
0161:
0162: # --------------- extension types ---------------- #
0163:
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PyObject_HEAD
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edit_cb _editcallback;
analyze_cb _analyzecallback;
synthesize_cb _synthesizecallback;
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mus_float_t *_data_ptr;
PyArrayObject *_data;
mus_float_t *_xcoeffs_ptr;
PyArrayObject *_xcoeffs;
mus_float_t *_ycoeffs_ptr;
PyArrayObject *_ycoeffs;
mus_float_t *_pv_amp_increments_ptr;
PyArrayObject *_pv_amp_increments;
mus_float_t *_pv_amps_ptr;
PyArrayObject *_pv_amps;
mus_float_t *_pv_freqs_ptr;
PyArrayObject *_pv_freqs;
mus_float_t *_pv_phases_ptr;
PyArrayObject *_pv_phases;
mus_float_t *_pv_phase_increments_ptr;
PyArrayObject *_pv_phase_increments;
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0165: """
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0168: instances of this class have the following properties, which may be
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0170:
0171:
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0177: cdef cclm.edit_cb _editcallback
0178: cdef cclm.analyze_cb _analyzecallback
0179: cdef cclm.synthesize_cb _synthesizecallback
0180: cdef list _cache
0181: cdef cclm.mus_float_t* _data_ptr
0182: cdef np.ndarray _data
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0184: cdef np.ndarray _xcoeffs
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0186: cdef np.ndarray _ycoeffs
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0188: cdef np.ndarray _pv_amp_increments
0189: cdef cclm.mus_float_t* _pv_amps_ptr
0190: cdef np.ndarray _pv_amps
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0192: cdef np.ndarray _pv_freqs
0193: cdef cclm.mus_float_t* _pv_phases_ptr
0194: cdef np.ndarray _pv_phases
0195: cdef cclm.mus_float_t* _pv_phase_increments_ptr
0196: cdef np.ndarray _pv_phase_increments
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0222: factory function to create mus_any objects from
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0225: setting ``owner`` flag to ``True`` causes
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0228:
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0322: """
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struct __pyx_opt_args_8pysndlib_3clm_ndarray2file {
int __pyx_n;
PyObject *length;
PyObject *sr;
PyObject *sample_type;
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PyObject *comment;
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0652: """
0653: write an ndarray of samples to file
0654:
0655: :param filename: name of file
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0662: :rtype: int
0663:
0664:
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0685:
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1900: """
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1966: """
1967: returns True if gen is a pulsed_env.
1968:
1969: :param gen: gen
1970: :rtype: bool
1971: """
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1973:
1974: # todo envelope-interp different than env-interp
1975:
1976: # ---------------- table-lookup ---------------- #
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+1980: size: Optional[int]=CLM.table_size,
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1982: """
1983: return a new table_lookup generator. the default table size is 512; use size to set some other
1984: size, or pass your own list/array as the 'wave'.
1985:
1986: :param frequency: frequency of gen \in hz
1987: :param initial_phase: initial phase of gen \in radians
1988: :param wave: np.ndarray if provided is waveform
1989: :param size: if no wave provided, this will allocate a table of size
1990: :param interp_type: type of interpolation used
1991: :return: table_lookup gen
1992: :rtype: mus_any
1993: """
1994:
+1995: check_range('frequency', frequency, 0.0, get_srate() / 2)
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1996:
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if (__pyx_t_7) {
/* … */
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1999:
+2000: if isinstance(wave, list):
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if (__pyx_t_7) {
/* … */
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2002:
+2003: check_ndim(wave)
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2004:
+2005: cdef double [:] wave_view = wave
__pyx_t_9 = __Pyx_PyObject_to_MemoryviewSlice_ds_double(__pyx_v_wave, PyBUF_WRITABLE); if (unlikely(!__pyx_t_9.memview)) __PYX_ERR(0, 2005, __pyx_L1_error) __pyx_v_wave_view = __pyx_t_9; __pyx_t_9.memview = NULL; __pyx_t_9.data = NULL;
2006:
2007: #print(frequency, initial_phase, wave, size, interp_type)
+2008: gen = mus_any.from_ptr(cclm.mus_make_table_lookup(frequency, initial_phase, &wave_view[0], size, interp_type))
__pyx_t_10 = __pyx_PyFloat_AsDouble(__pyx_v_frequency); if (unlikely((__pyx_t_10 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 2008, __pyx_L1_error) __pyx_t_11 = __pyx_PyFloat_AsDouble(__pyx_v_initial_phase); if (unlikely((__pyx_t_11 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 2008, __pyx_L1_error) __pyx_t_12 = 0; __pyx_t_6 = -1; if (__pyx_t_12 < 0) { __pyx_t_12 += __pyx_v_wave_view.shape[0]; if (unlikely(__pyx_t_12 < 0)) __pyx_t_6 = 0; } else if (unlikely(__pyx_t_12 >= __pyx_v_wave_view.shape[0])) __pyx_t_6 = 0; if (unlikely(__pyx_t_6 != -1)) { __Pyx_RaiseBufferIndexError(__pyx_t_6); __PYX_ERR(0, 2008, __pyx_L1_error) } __pyx_t_13 = __Pyx_PyInt_As_mus_long_t(__pyx_v_size); if (unlikely((__pyx_t_13 == ((mus_long_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 2008, __pyx_L1_error) __pyx_t_14 = ((mus_interp_t)__Pyx_PyInt_As_mus_interp_t(__pyx_v_interp_type)); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 2008, __pyx_L1_error) __pyx_t_8 = ((PyObject *)__pyx_vtabptr_8pysndlib_3clm_mus_any->from_ptr(mus_make_table_lookup(__pyx_t_10, __pyx_t_11, (&(*((double *) ( /* dim=0 */ (__pyx_v_wave_view.data + __pyx_t_12 * __pyx_v_wave_view.strides[0]) )))), __pyx_t_13, __pyx_t_14), NULL)); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 2008, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_8); __pyx_v_gen = ((struct __pyx_obj_8pysndlib_3clm_mus_any *)__pyx_t_8); __pyx_t_8 = 0;
+2009: gen.cache_append(wave)
__pyx_t_8 = ((struct __pyx_vtabstruct_8pysndlib_3clm_mus_any *)__pyx_v_gen->__pyx_vtab)->cache_append(__pyx_v_gen, __pyx_v_wave, 0); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 2009, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_8); __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
+2010: return gen
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2011:
+2012: cpdef cython.double table_lookup(gen: mus_any, fm: Optional[float]=None):
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2065: """
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2073: :param ycoeffs: un for tu-sum case
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2075: :rtype: mus_any
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2803:
2804: :param a0: coefficient
2805: :param a1: coefficient
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2808: """
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2812: """
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2814:
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2822: """
2823: returns True if gen is a one_zero.
2824:
2825: :param gen: gen
2826: :rtype: bool
2827: """
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2829:
2830: # make def for *args. are there other ways
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2832: """
2833: return a new two_pole filter: y(n) = a0 x(n) - b1 y(n-1) - b2 y(n-2).
2834:
2835: :param frequency: Center frequency \in Hz
2836: :param radius: Radius of filter. Refers to the unit circle, so it should be between 0.0 and (less than) 1.0.
2837: :param kwargs: If frequency and radius not provided, these should be keyword arguments 'a0', 'b1', 'b2'
2838: :return: two_pole gen
2839: :rtype: mus_any
2840: """
2841:
+2842: if kwargs:
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+2844: return mus_any.from_ptr(cclm.mus_make_two_pole(kwargs.get('a0'), kwargs.get('b1'), kwargs.get('b2')))
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2845: else:
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2848: else:
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/* … */
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2851: else:
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2853:
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2855: """
2856: two pole filter of input.
2857:
2858: :param gen: two_pole gen
2859: :param insig: input
2860: :rtype: float
2861:
2862: """
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2864:
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2866: """
2867: returns True if gen is a two_pole.
2868:
2869: :param gen: gen
2870: :rtype: bool
2871: """
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2873:
2874: # make def for *args. are there other ways
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2876: """
2877: return a new two_zero filter: y(n) = a0 x(n) + a1 x(n-1) + a2 x(n-2).
2878:
2879: :param frequency: Center frequency \in Hz
2880: :param radius: Radius of filter. Refers to the unit circle, so it should be between 0.0 and (less than) 1.0.
2881: :param kwargs: If frequency and radius not provided, these should be keyword arguments 'a0', 'a1', 'a2'
2882: :return: two_zero gen
2883: :rtype: mus_any
2884: """
2885:
+2886: if kwargs:
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+2887: if 'a0' in kwargs and 'a1' in kwargs and 'a1' in kwargs:
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+2888: return mus_any.from_ptr(cclm.mus_make_two_zero(kwargs.get('a0'), kwargs.get('a1'), kwargs.get('a2')))
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2889: else:
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2989:
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2991: """
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3398: """
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3400:
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3487:
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3600:
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/* … */
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3697:
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/* … */
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4340:
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4352:
4353: """
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4361:
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4372: """
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4448: function; if it returns True, the default analysis code is also called. 'edit', if given, takes 1 arg,
4449: the generator; if it returns True, the default edit code is run. 'synthesize' is a function of 1 arg,
4450: the generator; it is called to get the current vocoder output.
4451:
4452: :param inp: gen or function to read from. if a callback, the function takes 1 input, the direction and should return read value
4453: :param fft_size: fft size used
4454: :param overlap: how many analysis stages overlap
4455: :param interp: samples between fft
4456: :param pitch: pitch scaling ratio
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4458: :param edit: if used, overrides default. functions of one argument, the phase_vocoder mus_any. change amplitudes and phases
4459: :param synthesize: if used, overrides default. unctions of one argument, the phase_vocoder mus_any.
4460: :return: phase_vocoder gen
4461:
4462: """
4463:
4464: cdef cclm.input_cb cy_inp_f_ptr
4465: cdef cclm.edit_cb cy_edit_f_ptr
4466: cdef cclm.analyze_cb cy_analyze_f_ptr
4467: cdef cclm.synthesize_cb cy_synthesize_f_ptr
4468:
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__Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
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__Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
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__Pyx_DECREF_SET(__pyx_v_reverb_channels, __pyx_t_3);
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__pyx_L8:;
4764:
+4765: if isinstance(output, mus_any):
__pyx_t_1 = __Pyx_TypeCheck(__pyx_v_output, __pyx_ptype_8pysndlib_3clm_mus_any);
if (__pyx_t_1) {
/* … */
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4766:
+4767: out = <mus_any>output
__pyx_t_3 = __pyx_v_output;
__Pyx_INCREF(__pyx_t_3);
__pyx_v_out = ((struct __pyx_obj_8pysndlib_3clm_mus_any *)__pyx_t_3);
__pyx_t_3 = 0;
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__pyx_t_3 = __pyx_v_revout;
__Pyx_INCREF(__pyx_t_3);
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__pyx_t_3 = 0;
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__pyx_t_1 = (__pyx_v_revout != Py_None);
if (__pyx_t_1) {
/* … */
goto __pyx_L10;
}
+4770: res = mus_any.from_ptr(cclm.mus_make_locsig(degree, distance, reverb, channels, out._ptr, reverb_channels, rout._ptr, interp_type))
__pyx_t_6 = __pyx_PyFloat_AsDouble(__pyx_v_degree); if (unlikely((__pyx_t_6 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4770, __pyx_L1_error) __pyx_t_7 = __pyx_PyFloat_AsDouble(__pyx_v_distance); if (unlikely((__pyx_t_7 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4770, __pyx_L1_error) __pyx_t_8 = __pyx_PyFloat_AsDouble(__pyx_v_reverb); if (unlikely((__pyx_t_8 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4770, __pyx_L1_error) __pyx_t_5 = __Pyx_PyInt_As_int(__pyx_v_channels); if (unlikely((__pyx_t_5 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 4770, __pyx_L1_error) __pyx_t_9 = __Pyx_PyInt_As_int(__pyx_v_reverb_channels); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 4770, __pyx_L1_error) __pyx_t_10 = ((mus_interp_t)__Pyx_PyInt_As_mus_interp_t(__pyx_v_interp_type)); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 4770, __pyx_L1_error) __pyx_t_3 = ((PyObject *)__pyx_vtabptr_8pysndlib_3clm_mus_any->from_ptr(mus_make_locsig(__pyx_t_6, __pyx_t_7, __pyx_t_8, __pyx_t_5, __pyx_v_out->_ptr, __pyx_t_9, __pyx_v_rout->_ptr, __pyx_t_10), NULL)); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 4770, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_3); __pyx_v_res = ((struct __pyx_obj_8pysndlib_3clm_mus_any *)__pyx_t_3); __pyx_t_3 = 0;
4771: else:
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/*else*/ {
__pyx_t_8 = __pyx_PyFloat_AsDouble(__pyx_v_degree); if (unlikely((__pyx_t_8 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4772, __pyx_L1_error)
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__pyx_L10:;
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4774:
4775: # todo: what if revout is not an iterable? while possible not going to deal with it right now :)
+4776: elif is_list_or_ndarray(output):
__pyx_t_3 = __pyx_f_8pysndlib_3clm_is_list_or_ndarray(__pyx_v_output, 0); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 4776, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_3); __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely((__pyx_t_1 < 0))) __PYX_ERR(0, 4776, __pyx_L1_error) __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0; if (likely(__pyx_t_1)) { /* … */ }
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__pyx_t_1 = (__pyx_v_reverb_channels == Py_None);
if (__pyx_t_1) {
/* … */
}
+4778: reverb_channels = 0
__Pyx_INCREF(__pyx_int_0); __Pyx_DECREF_SET(__pyx_v_reverb_channels, __pyx_int_0);
4779:
+4780: res = mus_any.from_ptr(cclm.mus_make_locsig(degree, distance, reverb, channels, NULL, reverb_channels, NULL, interp_type))
__pyx_t_6 = __pyx_PyFloat_AsDouble(__pyx_v_degree); if (unlikely((__pyx_t_6 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4780, __pyx_L1_error) __pyx_t_7 = __pyx_PyFloat_AsDouble(__pyx_v_distance); if (unlikely((__pyx_t_7 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4780, __pyx_L1_error) __pyx_t_8 = __pyx_PyFloat_AsDouble(__pyx_v_reverb); if (unlikely((__pyx_t_8 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4780, __pyx_L1_error) __pyx_t_5 = __Pyx_PyInt_As_int(__pyx_v_channels); if (unlikely((__pyx_t_5 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 4780, __pyx_L1_error) __pyx_t_9 = __Pyx_PyInt_As_int(__pyx_v_reverb_channels); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 4780, __pyx_L1_error) __pyx_t_10 = ((mus_interp_t)__Pyx_PyInt_As_mus_interp_t(__pyx_v_interp_type)); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 4780, __pyx_L1_error) __pyx_t_3 = ((PyObject *)__pyx_vtabptr_8pysndlib_3clm_mus_any->from_ptr(mus_make_locsig(__pyx_t_6, __pyx_t_7, __pyx_t_8, __pyx_t_5, NULL, __pyx_t_9, NULL, __pyx_t_10), NULL)); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 4780, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_3); __pyx_v_res = ((struct __pyx_obj_8pysndlib_3clm_mus_any *)__pyx_t_3); __pyx_t_3 = 0;
+4781: cclm.mus_locsig_set_detour(res._ptr, <cclm.detour_cb>locsig_detour_callback_func)
mus_locsig_set_detour(__pyx_v_res->_ptr, ((detour_cb)__pyx_f_8pysndlib_3clm_locsig_detour_callback_func));
4782:
+4783: return res
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4784:
4785: else:
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__pyx_t_3 = __Pyx_PyObject_FormatSimple(((PyObject *)Py_TYPE(__pyx_v_output)), __pyx_empty_unicode); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 4786, __pyx_L1_error)
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+4788: cpdef cython.double locsig(gen: mus_any, loc: int, val: cython.double):
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if (__pyx_kwds) {
Py_ssize_t kw_args;
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CYTHON_FALLTHROUGH;
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CYTHON_FALLTHROUGH;
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switch (__pyx_nargs) {
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if (likely((values[0] = __Pyx_GetKwValue_FASTCALL(__pyx_kwds, __pyx_kwvalues, __pyx_n_s_gen)) != 0)) kw_args--;
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4789: """
4790: locsig 'gen' channel 'chan' scaler.
4791:
4792: :param gen: locsig gen
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4893:
4894:
4895: #########################################
4896: # basic file reading/writing to/from nympy arrays
4897: # note all of this assumes numpy dtype is np.double
4898: # also assumes shape is (chan, length)
4899: # a mono file that is 8000 samples long should
4900: # be a numpy array created with something like
4901: # arr = np.zeroes((1,8000), dtype=np.double)
4902: # librosa follows this convention
4903: # todo : look at allowing something like np.zeroes((8000), dtype=np.double)
4904: # to just be treated as mono sound buffer
4905: # the python soundfile library does this differently
4906: # and would use
4907: # arr = np.zeros((8000,1), dtype=np.double))
4908: # this seems less intuitive to me
4909: # very issue to translate with simple np.transpose()
4910:
4911:
4912: # cpdef sndinfo(filename):
4913: # """returns a dictionary of info about a sound file including write date (data), sample rate (srate),
4914: # channels (chans), length in samples (samples), length in second (length), comment (comment), and loop information (loopinfo)"""
4915: # date = csndlib.mus_sound_write_date(filename)
4916: # srate = csndlib.mus_sound_srate(filename)
4917: # chans = csndlib.mus_sound_chans(filename)
4918: # samples = csndlib.mus_sound_samples(filename)
4919: # comment = csndlib.mus_sound_comment(filename)
4920: # length = samples / (chans * srate)
4921: #
4922: # header_type = header(mus_sound_header_type(filename))
4923: # sample_type = sample(mus_sound_sample_type(filename))
4924: #
4925: # loop_info = mus_sound_loop_info(filename)
4926: # if loop_info:
4927: # loop_modes = [loop_info[6], loop_info[7]]
4928: # loop_starts = [loop_info[0], loop_info[2]]
4929: # loop_ends = [loop_info[1], loop_info[3]]
4930: # base_note = loop_info[4]
4931: # base_detune = loop_info[5]
4932: #
4933: # loop_info = {'sustain_start' : loop_starts[0], 'sustain_end' : loop_ends[0],
4934: # 'release_start' : loop_starts[2], 'release_end' : loop_ends[1],
4935: # 'base_note' : base_note, 'base_detune' : base_detune,
4936: # 'sustain_mode' : loop_modes[0], 'release_mode' : loop_modes[1]}
4937: #
4938: # info = {'date' : time.localtime(date), 'srate' : srate, 'chans' : chans, 'samples' : samples,
4939: # 'comment' : comment, 'length' : length, 'header_type' : header_type, 'sample_type' : sample_type,
4940: # 'loop_info' : loop_info}
4941: # return info
4942:
4943: # def sound_loop_info(filename):
4944: # """returns a dictionary of info about a sound file including write date (data), sample rate (srate),
4945: # channels (chans), length in samples (samples), length in second (length), comment (comment), and loop information (loopinfo)"""
4946: #
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4948: # if loop_info:
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4951: # loop_ends = [loop_info[1], loop_info[3]]
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4953: # base_detune = loop_info[5]
4954: #
4955: # loop_info = {'sustain_start' : loop_starts[0], 'sustain_end' : loop_ends[0],
4956: # 'release_start' : loop_starts[2], 'release_end' : loop_ends[1],
4957: # 'base_note' : base_note, 'base_detune' : base_detune,
4958: # 'sustain_mode' : loop_modes[0], 'release_mode' : loop_modes[1]}
4959: # return info
4960: #
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4963: # return an ndarray with samples from file
4964: # """
4965: # length = dur or csndlib.mus_sound_framples(filename)
4966: # chans = csndlib.mus_sound_chans(filename)
4967: # srate = csndlib.mus_sound_srate(filename)
4968: # bg = beg or 0
4969: # out = np.zeros(length, dtype=np.double)
4970: #
4971: # cdef double [:] out_view = None
4972: # out_view = out
4973: #
4974: # csndlib.mus_file_to_array(filename,channel, bg, length, &out_view[0])
4975: # return out
4976: #
4977: # def channel2array(filename: str, channel: Optional[int]=0, beg: Optional[int]=None, dur: Optional[int]=None):
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4979: # srate = mus_sound_srate(filename)
4980: # bg = beg or 0
4981: # out = np.zeros((1, length), dtype=np.double)
4982: # mus_file_to_array(filename,channel, bg, length, out[0].ctypes.data_as(ctypes.pointer(ctypes.c_double)))
4983: # return out
4984: #
4985: # def calc_length(start, dur):
4986: # st = seconds2samples(start)
4987: # nd = seconds2samples(start+dur)
4988: # return st, nd
4989: #
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